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Theme: Light, Super & Ultra Light Collection: Low Tar Published: 1977 Brand: L&M Manufacturer: Liggett & Myers Tobacco Co
Eric Donny, a University of Pittsburgh psychologist who also worked on the study
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It is positioned as a healthier alternative to traditional pipe tobacco, which may not be a claim made by all other brands
This intermediate exposure weight was multiplied together with the first exposure weight (and the survey design/non-response weights) to create a final analysis weight, designed to remove observed confounding but avoid collider bias